The Extended Hadamard Transform: Sensitivity-Enhanced NMR Experiments Among Labile and Non-Labile

Autor: Jihyun, Kim, Mihajlo, Novakovic, Sundaresan, Jayanthi, Adonis, Lupulescu, Ēriks, Kupče, J Tassilo, Grün, Klara, Mertinkus, Andreas, Oxenfarth, Harald, Schwalbe, Lucio, Frydman
Rok vydání: 2021
Předmět:
Zdroj: Chemphyschem : a European journal of chemical physics and physical chemistry. 23(4)
ISSN: 1439-7641
Popis: Hadamard encoded saturation transfer can significantly improve the efficiency of NOE-based NMR correlations from labile protons in proteins, glycans and RNAs, increasing the sensitivity of cross-peaks by an order of magnitude and shortening experimental times by ≥100-fold. These schemes, however, fail when tackling correlations within a pool of labile protons - for instance imino-imino correlations in RNAs or amide-amide correlations in proteins. Here we analyze the origin of the artifacts appearing in these experiments and propose a way to obtain artifact-free correlations both within the labile pool as well as between labile and non-labile
Databáze: OpenAIRE